Add border to footer bottom for UI test

Author: JoelCDL

css/components/footer.css

@@ -3,6 +3,7 @@
 .c-footer {
   margin-block-end: var(--space2);
   border-block-start: 1px solid oklch(88% 0 0deg);
+  border-block-end: solid green;
 
   @media print {
     margin-block: var(--space2) 0;